Improvement in machines-for making boot and shoe counter s



No. 192,582, Paten ted July 3, 1877.

FIGAL.

N. PETERS, PHOTO-LXTHDGRLPHEE WASHINGTON. D C.

JOHN KIMBALL, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN MACHINES oe WiAlihlG soot/mo sacs couarras.

Specification forming part of Letters Patent No. h92,52 ,dated July 3,1877; application filed October 15, 1875. I

To all whom it may concern:

Be it known that I, JOHN KIMBALL, of Boston, in the county of Suffolkand State of Massachusetts, have invented a new and useful Machineadapted especially for Making Stiffeners or Counters for Boots andShoes, of which the following is a specification In the drawings, Figure1 is an elevation, partly in section, showing the plunger raised. Fig. 2is a section with the plunger depressed. Fig. 3 is a plan with theplunger and its connections removed. Fig. 4 is also a plan, showing theplungerand its connectionsin section and depressed.

The principle of my invention consists in forming the stiifener byforcing it through a sectional female mold, thereby elongating thestock, and giving it not only the required shape, but so setting it thatit will retain this shape. The machine shown in the drawings is adaptedfor the manufacture of that style of stiffener described in my LettersPatent No. $1,957.

In the drawings, A is a plunger, the exterior lower surface of which isthe same as the inner surface of the article to be shaped. The femalemold is not a full mold, but a section of amold; it is formed of the twoslides B B, which are'fitted over an orifice in the table or bench G.The blank'for the stiffener is laid upon these slides and adjusted bythe gage D. This gage is adjusted so far from the opening in the moldthat the portion of the lower edge of the blank thus overlying theopening in the mold shall be of sufficient width to constitute thebase-flange of the stiffener when molded, said flange being crimped,formed, and set, as the blank is forced through the mold, by the descentof the plunger, and falls into a box below the female mold.

When the male and female mold are first brought together, the blank isnipped between the beveled surfaces a a of the female mold and theplunger, and that part of the blank which covers the opening through thefemale mold is caused to assume the shape of the bottom of the plungeror male mold. To better accomplish this object the slide B B should bemounted upon stiffsprings, which will allow their inner ends to yield alittle to the motion of the plunger just before they begin to recede.These springs are marked 12 b, and they are shown in section in Figs. 1and 2.

To insure the passage of the plunger into the sectional mold, cams F Fare attached to it, which enter slots in the slides B B, and

' engage with friction-rollers in order to move the slides outward. Theplunger enters the female mold, carrying the blank before it, while thecams F F are separating the slides B B; but the throw of the cams issuch that the slides are moved just sufficiently to allow the plunger toenter, and not enough to take the pressure of the female mold entirelyoff of the blank and as soon as the plunger has entered the female moldthe cams cease to opcrate, and the springs G G press the sections of thefemale mold tightly against the blank. This has the effect to draw theblank very closely over the plunger, and insures the forming of thestiffener.

To accommodate the inequalities in the thickness of the stock, a sheetof vulcanized rubber, e, should be attached to each side of the plunger.

The parts B B of the sectional female mold are shown as mounted in waysd cl,- but it is obvious that they may be mounted in any otherconvenient manner which will admit of their moving back and forth.

I do not claim, broadly, either the use of elastic bearings beneath thefemale mold, or to regulate the lateral pressure; nor do I so claimelastic cushionsor bearin gs to regulate or adjust the action or effectof the male mold or plunger, as I am aware that such devices have beenoften employed for these several purposes. N or do I claim devicesconstructed to form or mold the vertical wall only of the stiffener byforcing the blank through a divided female mold bymeans of a maleplunger.

What I claim as my invention is- 1. In a shoe-stiffener-crimpingmachine, the combination of plunger A, the divided mold a a B B, thesupporting-springs b b, and the concave bed 0, whereby the die-pieces BB are provided with a free, limited, and positive vertical adjustment attheir meeting ends by a pivotal movement upon the fixed fulcrum of theirouter ends, all substantially as described and shown.

2. In a shoe-stiffener-molding machine, the combination, witlra dividedfemale mold or die, of the male plunger A, formed with the solidunyielding face or head f and the parallel elastic cushions e e,arranged in rear of such head, substantially as described and shown.

3. In a shoe-counter-molding machine, the divided female mold B 13,provided with a Wall or boundary forforming both the sides and thebase-flange of the stiffener, and theplunger A, also formed with sidescorresponding to the curves of the mold and side walls of a stiffener,and with a flattened back corresponding to such base-flange, and adaptedto mold both the sides and bottom of the stiffener simultaneously as theplunger descends into-the mold.

4. In a shoe-stitfener-molding machine, the combination, with thedivided female mold B B and the male plunger A, of devices whichautomatically opensnch. mold for the entrance of theplunger,substantially in manner as and for the purposes specified.

5. The combination of male mold A, seetional female mold a a B B, cams FF, springs b I), and springs G G, substantially as described.

J OHN KIMBALL. Witnesses: v

UHAs. F. SLEEPER, J. E. KNOX.

